Replace 2BBL on 1978 F100 302 engine

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Oct 3, 2013 | 01:11 PM

78cowboy

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Replace 2BBL on 1978 F100 302 engine

Ok looking to replace the 2BBL Stock carb on the truck - might as well replace the intake while at it. This is what I am thinking - let me know if I am off my rocker.

Going to keep the EGR - to minimize messing with the timing - so I am getting the Edlebrock 8053 plate to adapt to 4BBL

Carb - 4 BBL 600CFM manual choke - Edelbrock 1405

Intake - Edelbrock performer 3721

Should be an afternoon job right?
Is 600CFM too much on a 302?

I am assuming I can use my 2BBL EGR with this adapter plate

Oct 3, 2013 | 02:22 PM

HIO Silver

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From: NorCal

Tilt!

To maximize the proposed mods, upgrade the exhaust (long tubes, flree flowing mufflers, and at least 2.25-inch tubing) before upgrading the intake.

Oct 3, 2013 | 02:30 PM

xkpsanit

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From: in the middle of nowhere

Quote:

Originally Posted by HIO Silver

Tilt!

To maximize the proposed mods, upgrade the exhaust (long tubes, flree flowing mufflers, and at least 2.25-inch tubing) before upgrading the intake.

HIO, you need to reread OP's questions

*edit.. no I need to reread it. Disregard

Oct 3, 2013 | 02:39 PM

78cowboy

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oh sorry the truck has headers and 2.25 exhaust no cats

Oct 3, 2013 | 02:51 PM

HIO Silver

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From: NorCal

Quote:

Originally Posted by xkpsanit

HIO, you need to reread OP's questions

*edit.. no I need to reread it. Disregard

Quote:

Originally Posted by 78cowboy

oh sorry the truck has headers and 2.25 exhaust no cats

Thanks. Yeah, that'll work. 'not sure about the EGR thingy but sounds like you've got most of the handle on it. 600 is a lil big but still OK on a 302.

Just a coupla notes....

Verify the heater hose fitting on top of the new manifold is the same size as your existing manifold. IIRC, some aftermarket manifolds have a bigger hole.

Wanna keep the intake looking good? Then spray it with high-temp clear to seal up its texture. 'makes wiping off smudges and stuff is waaaaaay easier.

Do a 1/4-mile run to establish a baseline ET. Then do the same 1/4-mile afterwards and compare. Then post your results so others can be made aware of the improved performance!

Oct 3, 2013 | 05:58 PM

blue04.5

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Joined: Jul 2013

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From: Oregon

Quote:

Originally Posted by HIO Silver

Do a 1/4-mile run to establish a baseline ET. Then do the same 1/4-mile afterwards and compare. Then post your results so others can be made aware of the improved performance!

Yes and videos are mandatory with said test

Oct 5, 2013 | 07:06 PM

V10man

Logistics Pro

Joined: Feb 2000

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From: Mesa

I would skip the egr part and get a regular manifold. The old stock 2bbl was tuned for egr, the new 4bbl and intake aren't so why deal with that? Little cheaper too.